\section{Conclusions}
\label{s:future}

\foosys is a distributed block store that offers an unprecedented
combination of scalability and robustness. Surprisingly, \foosys'
robustness does not come at the cost of performance: pipelined commit
allows updates to proceed at high speed while ensuring that the
system's committed state is consistent; end-to-end checks
allow reading from one replica safely; and active replication not only
eliminates reliability bottlenecks but also eases performance bottlenecks.

